89 lines
2.4 KiB
Rust
89 lines
2.4 KiB
Rust
use {
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std::sync::{Arc, RwLock},
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cgmath::Point2,
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crate::{
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core::{ViewPort, Observer, ObserverExt, ObserverBroadcast, InnerViewPort, OuterViewPort},
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index::{ImplIndexView},
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terminal::{TerminalAtom, TerminalView, TerminalStyle},
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projection::ProjectionArg
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}
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};
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//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
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pub struct LeveledTermView {
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src: Arc<RwLock<Option<Arc<dyn TerminalView>>>>,
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_src_obs: Arc<RwLock<ProjectionArg<dyn TerminalView, Self>>>,
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level: usize,
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cast: Arc<RwLock<ObserverBroadcast<dyn TerminalView>>>
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}
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impl LeveledTermView {
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pub fn new(
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src: OuterViewPort<dyn TerminalView>
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) -> (Arc<RwLock<Self>>, OuterViewPort<dyn TerminalView>) {
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let port = ViewPort::new();
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let v = Self::with_port(src, port.inner());
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(v, port.into_outer())
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}
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pub fn with_port(
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src_port: OuterViewPort<dyn TerminalView>,
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dst_port: InnerViewPort<dyn TerminalView>
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) -> Arc<RwLock<Self>> {
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let src_obs = ProjectionArg::new(
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// we simply forward all messages
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|s: Arc<RwLock<Self>>, msg: &Point2<i16>| {
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s.read().unwrap().cast.notify(msg);
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}
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);
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let v = Arc::new(RwLock::new(
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LeveledTermView {
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src: src_obs.read().unwrap().src.clone(),
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_src_obs: src_obs.clone(),
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level: 0,
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cast: dst_port.get_broadcast()
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}
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));
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src_obs.write().unwrap().proj = Arc::downgrade(&v);
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src_port.add_observer(src_obs);
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dst_port.set_view(Some(v.clone()));
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v
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}
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pub fn set_level(&mut self, l: usize) {
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self.level = l;
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// update complete area
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if let Some(a) = self.src.area() {
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self.cast.notify_each(a);
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}
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}
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}
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impl ImplIndexView for LeveledTermView {
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type Key = Point2<i16>;
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type Value = TerminalAtom;
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fn get(&self, pos: &Point2<i16>) -> Option<TerminalAtom> {
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self.src.get(pos).map(
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|a| a.add_style_front(
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if self.level > 0 {
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TerminalStyle::bold(true)
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.add(TerminalStyle::bg_color((0, 0, 0)))
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} else {
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TerminalStyle::bold(false)
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})
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)
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}
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fn area(&self) -> Option<Vec<Point2<i16>>> {
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self.src.area()
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}
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}
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